Modeling and Simulation of a Series Hybrid CNG Vehicle

Paper #:
  • 2014-01-1802

Published:
  • 2014-04-01
Citation:
Alzuwayer, B., Abdelhamid, M., Pisu, P., Giovenco, P. et al., "Modeling and Simulation of a Series Hybrid CNG Vehicle," SAE Int. J. Alt. Power. 3(1):20-29, 2014, https://doi.org/10.4271/2014-01-1802.
Pages:
10
Abstract:
Predicting fuel economy during early stages of concept development or feasibility study for a new type of powertrain configuration is an important key factor that might affect the powertrain configuration decision to meet CAFE standards. In this paper an efficient model has been built in order to evaluate the fuel economy for a new type of charge sustaining series hybrid vehicle that uses a Genset assembly (small 2 cylinders CNG fueled engine coupled with a generator). A first order mathematical model for a Li-Ion polymer battery is presented based on actual charging /discharging datasheet. Since the Genset performance data is not available, normalized engine variables method is used to create powertrain performance maps. An Equivalent Consumption Minimization Strategy (ECMS) has been implemented to determine how much power is supplied to the electric motor from the battery and the Genset. Finally the simulator has been tested for different driving cycles and the results which include fuel consumption, battery state of charge and the vehicle drivability performance are shown.
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